I saw your parts on the other thread and would suggest the graphconllc conversion software, but this will still only get you the 2-d file.
The parts would be very easy to draw manually as well.
The g-code can be quickly generated by any of the near free programs described in the other thread.
Do you have any original paper drawings for reference and dimension? ( not for scanning )
Generating g-code is easy, but you will need to post process it for the controller for your machine.
All of this appears daunting but once you do it once, it gets simpler and is really worth the effort.
Take care,
Phill Pittman
digicarve@verizon.net www.masterwerkes.com